Sorry, I posted without reading the whole page of the documentation.
The paragraph "Returning Values Via Parameters" says, that it is
correct when the identifier with which the macro was called changes to
a new value. But I think this is a contradiction to the quoted
paragraph, isn't it?

Best regards,
Friedemann





Friedemann Schmidt
Fri### [at] Stonescom
Raytracing-Gallery: http://www.rz.fhtw-berlin.de/~s0049669

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